Формова різноманітність і життєвий стан модрини у насадженнях Західного Полісся [Variety of forms and vitality of the larch in the stands of Western Polissia]
Journal Title: Наукові праці Лісівничої академії наук України - Year 2016, Vol 14, Issue
Abstract
It was not possible to distinguish forms for Larix decidua Mill., Larix kaempferi Carr., Larix eurolepis Henry by the angle of branching due to the high variability of this feature at different heights of the trunk during the life cycle of individuals. Also the attempt to identify forms of the studied larch varieties by the thickness of knots failed due to the strong dependence of this characteristic on the age and density of stands, the distribution pattern of individual trees in the forest. The density of the crown, in contrast to the angle of branching, is more stable attribute of the form, which gives grounds for distinguishing on the territory of Western Polissia the forms of Larix decidua with open and medium density canopy; the forms of Larix kaempferi with dense and medium density canopy; the forms of Larix eurolepis with dense crown. In terms of clean-boled trees, there are three forms of Larix decidua with satisfactory, good and very good cleaning; in other varieties of larch, in view of the limited age of investigated stands, no forms with such characteristics have been found. Six forms by the type of bark were identified for Larix decidua – thick-barked, alder-like, thin-barked, pine-like platy bark, broad-scaled bark , narrow-ridged bark.; the last two types of bark are the most common. For Larix kaempferi there are three forms – alder-like bark, narrow-ridged bark, and narrow-scaled bark, the last of which is the most common; Larix eurolepis - only two forms are distinguished according to the type of bark – broad-scaled and narrow-scaled. The vitality of larch varieties such as European, Japanese and hybrid in the young stands up to 20 years of age is determined by the degree of differentiation of trees in stands, it is fairly active in this age range with the result that in the plantations there are individuals in different categories of vitality. The European larch, as light-demanding species, is characterized by somewhat lower vitality compared to other types of larch. In middle-aged, maturing and mature stands of European larch, the predominant categories are completely healthy and relatively healthy individuals (about 90%). The most productive stands with participation of Larix decidua in Western Polissia have a medium-density crown with a thin or middle-thickness knots, clean trunks and narrow-ridged bark. Highly-productive stands with participation of Larix kaempferi are characterized by trees with dense canopy, knots of medium thickness, satisfactorily cleaned trunks and narrow-scaled type of bark. Highly-productive stands with participation of Larix eurolepis have a dense crown, thin knots, satisfactorily cleaned trunks with broad-scaled bark.
Authors and Affiliations
Iurii Debryniuk, Serhiy Belelya
Keywords
Related Articles
- EP ID EP199248
- DOI -
- Views 123
- Downloads 0
Larch and fir in planted forest stand of the Precarpathian and the Carpathians regions: silvicultural-biometric characteristics and growth peculiarities Модрина та ялиця в штучних насадженнях Прикарпаття і Карпат: лісівничо-таксаційна характеристика та особливості росту
In the western region of Ukraine, silver fir (Abies alba Mill.) is a common mainly in the Precarpathians and the Carpathians. Within the natural range it forms high-yielding, predominantly mixed stands. In the area of...
Динаміка репродуктивних процесів на клонових насінних плантаціях дуба звичайного (Quercus robur L.) у Лівобережному Лісостепу України Dynamics of reproductive processes on English oak (Quercus robur L.) clonal seed orchards in the left-bank Forest-Steppe of Ukraine
Проаналізовано дані 18-річних спостережень за інтенсивністю цвітіння та плодоношення клонів дуба звичайного (Quercus robur L.) та їхніх груп на двох КНП у Харківській області, створених у 1979 та 1985 рр. за однаковою т...
Biotic productivity of forests of the National Natural Park «Holosiivskyi» Біотична продуктивність лісів Національного природного парку «Голосіївський»
According to the research results, the structure and total volumes of phytomass and sequestered carbon of the National natural park «Holosiivskyi» forest stands are presented. The calculation of the biotic productivity o...
Analysis of financing costs of the enterprises of State Forest Resource Agency from the state budget of Ukraine Аналіз фінансування видатків підприємств Держлісагенства з державного бюджету України
The essence and peculiarities of the fiscal regulation mechanism are studied. The scientific and theoretical bases of its influence on ensuring a balanced development of forestry in the system of fiscal policy of nature...
Сучасний стан і перспективи збереження генетичних ресурсів тополі в Україні Current state and prospects of the poplar genetic resources conservation in Ukraine
Узагальнено інформацію про наявні площі природних і штучних деревостанів, розподіл за категоріями лісів, а також про видове різноманіття представлених в Україні тополь за результатами аналізу бази даних ВО "Укрдержліспро...